Regulating device for internal combustion engines



Feb. 25, 1936.

J. E. WILD ET AL REGULATING DEVICE FOR INTERNAL COMBUSTION ENGINES Filed Nov. 28, 1933 2 Sheets-Sheet l 'WAJEWIE ATTORNEY Feb. 25, 1936, Q IEHWILD ET AL 2,031,625

REGULATING DEVICE FOR INTERNAL COMBUSTION ENGINES Filed Nov. 28, 1955 2 Sheets-Sheet 2 1 EN-roRs J 1 9 lag/u iy g warz ma ATTORNEY Patented Feb. 25, 1936 REGULATING DEVICE FOR'INTEBNAL COMBUSTION ENGINES Julius E. Wild, Speld. and Wolfgang E. Schwarzmann, Longmeadow, Mass, asslmors to United American Bosch Corporation, Springfield, Mass, a corporation of New York Application November 28, 1933, Serial No. 700,062

\ 4 Claims. (on. lea-13s) Our invention relates to improvements in controlling devices for internal combustion engines.

An object of the invention is to provide a controlling device for regulating both the fuel and air valves of the engine preferably in unison.

Another object of the invention is to provide a controllingdevice which includes both manual and mechanical operating members, the latter of which is preferably actuated at a predetermined speed of the engine and supersedes the manual actuation.

On the drawings:

Fig. 1 is a front view of our controlling device mounted upon an internal combustion engine one portion of which is shown in outline, other portions having been removed for the sake of clearness;

Fig. 2 is a side view of parts of the device as seen from one side of the engine; I

Fig. 3 is a view of parts of the controlling device in the relative position they occupy when mounted upon. the opposite side of the engine shown in Fig. 2; and v Fig. 4 shows a section, with parts in side elevation, of a portion of the distributor.

The casing I of a liquid fuel distributor may be mounted at the right of the engine, and housing 2, through which air flows, at' the left of the engine. The casing I is held in place by a bracket 3 adapted to be affixed to the body of the en-' gine. Liquid fuel is received in the casing I through supply pipe 4 and discharged therefrom through delivery pipes 5 leading to the separate cylinders of the engine, the rotor 33 of the fuel distributor being driven by an appropriate engine shaft and permitting fuel to flow to the delivery pipes in succession at the required intervals. Excess fuel is returned to the supply tank (not shown) through an overflow pipe 6.

The bore of the housing 2 is controlled by a pair of damper valves 1 and 8 which by their positions determine the amount of air drawn in by the engine to vaporize the fuel. It is made in sections, of which 9 contains the pivoted valve 7 and I contains the pivoted valve ii. The section fuel distributor so as to allow the rotor to turn freely but to be raised and lowered with it to vary the amount of fuel passing to pipes 5. A

fuel distributor of this type is shown in Fig. 4 from which it will be seen that longitudinal movements of the rod I4 are transmitted to the rotor of the distributor bringing greater or lesser areas or depths of a fuel metering groove into registry with delivery pipes 5. The details of the distributor form no part of the present invention and need not be further described. The spindle I is arranged to raise and lower the rods I4 and I6 in unison, being provided with a rigid arm I'I pinned to the rod I 4 and a. second'rigid arm l8 pinned to the rod I6. The lower end of the rod I8 is pinned to an arm I9 on the outside of housing 2 and rigid with valve I. The bearings 20 are secured to the framework of the engine to rotatably support the spindle I5. A suitable .kind of hand lever is attached to spindle I5, to turn it to reduce or increase as required both the amount of air flowing past the valve 1 and the amount of fuel discharged into pipes 5.

To enable both the air and the fuel to be shut off by a governor we provide additional connections to operate valve 8. As shown in Fig. 2, the top of easing I has aboss 2I through which the rod I4 passes. Around this boss is secured a clamp 22 which is angle-shaped and has a pair of separate lugs 23- forming a yoke at its upper end.

Pivotally secured between these lugs is a. lever 24 pivoted to rod 25, and actuated by spindle 26 mounted in bearings 20 like those for spindle I5. At one end spindle 26 carries arigid arm 21 pinned to the upper end of the rod 25, and at the other end it carries a similar rigid arm 28 connected by rod 29 to a bell-crank lever 30 on the outside of housing 2 and rigid with the rotatable valve 8. On the rod I4 between lever 24 and clamp 22 is a fixed collar ill. The end of the lever 24 above this collar is forked so that when lowered it engages the collar 3| and depresses the rod I4. A suitable type of governor is connected to the other arm of the bell-crank lever 30.

Until the engine reaches a predetermined high speed, the governor does not act and valve 8 remains fully open. Under these conditions, spindle I5 can be turned by the hand connections to adjust both the valve I and the distributor rotor in casing l in unison, the rod ll being free to move the rotor up and down for a distance equal to that between lever 24 and collar 3|.

,When, however, the predetermined speed is reached, the governor pulls upon bell-crank 30 and turns valve 8 to closed position. At the same time spindle 26 is turned and lifts rod 25 to cause lever 24 to depress the collar 3|. Then the rod M will be lowered and the rotor in the casing I will be so adjusted as to reduce the fuel discharge from the distributor 1 through the conduits 5. When the engine speed drops, the spindle 26 will of course be turned in reverse direction and the lever 24 will lift so as to liberate the rod ll to be again regulated by hand as required. The hand controlling means for the device is thus independent of the governor at all times until the limiting speed of the engine is reached.

The body of the engine, as shown, will be between the fuel distributor casing l and the housing 2 and the governor connected to the lever 3|] will be driven from the engine by any suitable connection.

Having described the invention, what is claimed 1. A controlling device for an internal combustion engine having a fuel distributor and means providing a passage for the supply of combustion supporting air to the engine, a valve in said passage, a lever and a rod connected to actuate said valve, a spindle having an arm thereon also connected to said rod, a fuel control rod entering said distributor, another arm on said spindle, elements providing a lost motion connection between the last named arm and the rod entering the distributor, a governor responsive to the speed of the engine, and connecting means between the valve and the governor so that as the speed of the engine increases the governor first actuates the valve toward closed position and subsequently adjusts the distributor through said lost motion connection to decrease the quantity of fuel supplied to the engine.

2. A controlling device for an internal combustion engine comprising a fuel distributor, a fuel'control rod entering said distributor, a collar on said rod, means providing a passage for the supply of combustion supporting air to the engine, a device responsive to the speed of the engine, a valve in said air passage connected to said device, and connections between the valve and said r'od including a forked lever to actuate the rod by engaging the collar, whereby as the a,osi,oaa

speed of the engine increases said speed responsive device first actuates the valve toward closed position and subsequently-adjusts the distributor through the lost motion connection provided by said forked lever and collar to decrease thequantity of fuel supply to the engine, said rod under other-conditions being free to move independently with respect to the distributor.

3. A controlling device for an internal combustion engine comprising a fuel distributor, means providing an air passage for the supply of combustion supporting air to the engine, a rod entering the distributor and having a collar thereon, a rotatably mounted spindle connected to reciprocate said rod, a valve in said air passage, a sec ond rod connected to enable said spindle to actuate said valve, 8. device responsive to the speed of the engine, a second valve in said air passage connected to said device, a second rotatable spindie, a rod also connecting said second spindle to said second valve, a lever having a forked end mounted adjacent the rod entering the distributor in position to engage the collar thereon and an additional rod connecting the second-named spindle to said lever, said collar and lever providing lost motion between said distributor and said device whereby said device is effective to control the latter at high speeds only.

4. A controlling device for an internal combustion engine comprising means for supplying metered charges of liquid fuel to said engine, a passage for the supply of combustion supporting air to said engine, a valve in said passage, manually controlled means to simultaneously regulate the fuel metering means and said valve whereby the quality of air supplied to the engine and the quantity of fuel supplied thereto may be simultaneously increased or decreased, a second valve in said passage, a device responsive to the speed of said engine for controlling said second valve and tending to close the same as the speed increases, and connections including a lost motion means between said second valve and said fuel metering means acting to transmit movement of said speed responsive device to control said fuel metering device to effect a decrease in the fuel supplied by said metering device to a predetermined maximum for given engine speed while permitting a further control of the fuel supply by the manual control means for all charges below said predetermined maximum.

' JULIUSE. WILD.

WOLFGANG E. SCHWARZMANN. 

